So about the same charge rate as other thefts?
It’s very location dependent. A mate lives in a nice area of Manchester and has had his bike shed emptied twice, and his kids have had bikes taken off them when out at the park. I leave my bikes outside the village shop/cafes/pubs here with a scissor thin cable lock and never had a problem.
It also depends on bikes – eldest got a cheap beater bike and a D lock and had no problems in two years in Cambridge, while “nicer ” bikes got taken a lot. There’s folk leave beater bikes all day at Ilkeston station with no problems, I’d never do that with one of mine.
There should be a market here for euro style city bikes with the built in wheel locks as sensible and unattractive modes of transport.